Policy and strategies addressing prevention and control of antimicrobial resistance in Brazil : a scoping review protocol

Introduction - Antimicrobial resistance (AMR) is considered one of the biggest health challenges of the 21st century. It has both social and economic consequences; therefore, timely review of public health policies that have been designed to manage AMR is essential. Brazil too has developed and implemented various polices for the prevention and control of AMR. However, till date, no study provides insights regarding the various public health policies or other programs implemented by Brazilian institutes. Objective - The objective is to define a scoping review protocol of policies that were developed to address prevention and control of antimicrobial resistance in Brazil, from a human health perspective. Method - This protocol has been registered in the Open Science Framework (DOI 10.17605/OSF.IO/EC9ZJ). Indexed literature in English, Spanish and Portuguese published till December 2020 in Lilacs, PubMed, Embase, and official websites of the Brazilian government will be reviewed. This review considers all studies identified through a comprehensive search of peer-reviewed and grey literature databases that have a reference for policies made for managing AMR in Brazil. The criteria for the scoping review will be set by two evaluators. A third evaluator will be consulted, if there is any disagreement between the two primary evaluators. A standardized form will be used for data extraction from the selected studies. The results will be presented in a tabular form with narrative abstracts related to the topics identified through the scoping review protocol. The PRISMA extension for Scoping Reviews tool will be used

Estado nutricional e complicações no periodo gestacional na escolha do tipo de parto / Nutritional status and complications in gestational period in choosing the type of childbirth

A questão do estado nutricional e complicações com o tipo de parto tem relevância científica diante do contexto médico e humano. As condições nutricionais de gestantes sofrem complicações no momento do parto por motivos ligados à nutrição. A maior parte das complicações gestacionais quando do momento e na escolha da via de parto está relacionada a patologias: hipertensão arterial (pré-eclâmpsia, eclâmpsia), diabetes mellitus, obesidade, dentre outros. Os objetivos deste estudo foram: relacionar o estado nutricional e as complicações gestacionais com o tipo de parto; demonstrar as patologias pré-existentes e adquiridas durante o período gestacional e verificar a prevalência dos tipos de partos. A pesquisa foi realizada em uma Maternidade pública do Estado do Piauí. Foi utilizado a metodologia descritiva com abordagem qualiquantitativa e aplicado questionário estruturado para 52 (cinquenta e duas) participantes da pesquisa. Os critérios de seleção foram: gestantes entre 15 a 40 anos, idade gestacional de 38 (trinta e oito) até 42 (quarenta e duas) semanas e ter aceitado participar do estudo. O processamento dos dados e a análise dos dados foi realizado através do programa SSPS®, versão 18.0. Utilizou-se a estatística descritiva por meio de média, desvio padrão, mínimo e máximo para apresentar as variáveis quantitativas e porcentagens as qualitativas, seguidamente foi realizado os testes de Kolmorogov-Smirnov, t student e o qui-quadrado de Pearson, considerado estatisticamente significativo um valor de p<0,05. Concluiu-se que a HAS, a DMG e a obesidade foram as patologias mais verificadas durante a gestação e, dentre elas, a que influenciou na escolha do tipo de parto foi a obesidade. 

Histórico clínico da Artrite Idiopática Juvenil (AIJ): uma revisão integrativa: Clinical history of Juvenile Idiopathic Arthritis (JIA): an integrative review

Introdução: A Artrite Idiopática Juvenil (AIJ), artropatia crônica mais prevalente nos primeiros anos de vida, caracteriza-se por artrite objetiva persistente em uma ou mais articulações por, no mínimo, seis semanas, com apresentações clínicas diversas. Objetivo: abordar os conceitos a respeito da história clínica da Artrite Idiopática Juvenil direcionando-os para a sua fisiopatologia, seu diagnóstico e tratamento. Metodologia: Trata-se de uma revisão integrativa de literatura, pautada na pergunta norteadora: “Artrite Idiopática Juvenil: como se dá a sua fisiopatologia, seu diagnóstico, e tratamento?”. O levantamento bibliográfico foi realizado nas seguintes bases de dados: Portal Regional BVS (LILACS), Scientific Eletronic Library Online (SciELO) e National Library of Medicine (PUBMED). Os Descritores Controlados de Ciências da Saúde (DeCS) utilizados na busca, em associação ao operador booleano “AND”, foram: “Artrite Juvenil Idiopática”; “Tratamento”; “Diagnóstico”. Foram selecionados 19 artigos, publicados entre 2014 e 2021, que estavam de acordo com o objetivo da pesquisa e se enquadravam nos seguintes critérios de inclusão: artigos publicados em português, inglês ou espanhol, cujos títulos e resumos mostraram-se em consonância com o propósito da revisão de literatura, indexados nos referidos bancos de dados. Artigos repetidos, dissertações e resumos de anais foram excluídos. Resultados: Desse modo, foram encontrados 87 artigos nas bases de dados supracitadas, o que reforça o caráter patológico obscuro da artrite idiopática juvenil, de maneira que os fatores etiológicos e fisiopatológicos ainda não bem esclarecidos, acreditando-se que estes relacionam-se a fatores genéticos, ambientais e associações com outras artrites crônicas. O diagnóstico é eminentemente clínico, porém alguns exames como, fator reumatoide, PCR e anti-CCP podem ser usados com fins prognósticos e acompanhamento do curso inflamatório, bem como para divisão em sete subtipos de Artrite idiopática Juvenil: sistêmica, oligarticular, poliarticular com fator reumatoide positivo, poliarticular com fator reumatoide negativo, artrite psoriásica, artrite relacionada à entesite (ARE) e forma indiferenciada. Nesse ínterim, o tratamento deve ser individualizado, centrado nas necessidades de cada paciente, visto a variedade de subtipos e manifestações clínicas dessa entidade clínica, de forma a possibilitar o controle da inflamação e restauração das articulações afetadas. Nessa análise, de forma geral, os tratamentos são conduzidos com anti-inflamatórios não esteroidais, glicorticoides, imunobiológicos e tratamento não farmacológico, caracterizado por atenção psicossocial, orientações dietéticas e exercícios físicos. Conclusão: Portanto, é possível inferir que se trata de uma patologia de importância clínica em que os fatores fisiopatológicos não são completamente conhecidos, o que reforça a necessidade de mais estudos dentro dessa abordagem. Para mais, ressalta-se a necessidade de uma equipe multiprofissional na abordagem e condução do paciente acometido, dado quadro clínico diverso, que requer um tratamento farmacológico e não farmacológico

SARS-CoV-2 uses CD4 to infect T helper lymphocytes

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the agent of a major global outbreak of respiratory tract disease known as Coronavirus Disease 2019 (COVID-19). SARS-CoV-2 infects mainly lungs and may cause several immune-related complications, such as lymphocytopenia and cytokine storm, which are associated with the severity of the disease and predict mortality. The mechanism by which SARS-CoV-2 infection may result in immune system dysfunction is still not fully understood. Here, we show that SARS-CoV-2 infects human CD4+ T helper cells, but not CD8+ T cells, and is present in blood and bronchoalveolar lavage T helper cells of severe COVID-19 patients. We demonstrated that SARS-CoV-2 spike glycoprotein (S) directly binds to the CD4 molecule, which in turn mediates the entry of SARS-CoV-2 in T helper cells. This leads to impaired CD4 T cell function and may cause cell death. SARS-CoV-2-infected T helper cells express higher levels of IL-10, which is associated with viral persistence and disease severity. Thus, CD4-mediated SARS-CoV-2 infection of T helper cells may contribute to a poor immune response in COVID-19 patients.</p

SARS-CoV-2 uses CD4 to infect T helper lymphocytes

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the agent of a major global outbreak of respiratory tract disease known as Coronavirus Disease 2019 (COVID-19). SARS-CoV-2 infects mainly lungs and may cause several immune-related complications, such as lymphocytopenia and cytokine storm, which are associated with the severity of the disease and predict mortality. The mechanism by which SARS-CoV-2 infection may result in immune system dysfunction is still not fully understood. Here, we show that SARS-CoV-2 infects human CD4+ T helper cells, but not CD8+ T cells, and is present in blood and bronchoalveolar lavage T helper cells of severe COVID-19 patients. We demonstrated that SARS-CoV-2 spike glycoprotein (S) directly binds to the CD4 molecule, which in turn mediates the entry of SARS-CoV-2 in T helper cells. This leads to impaired CD4 T cell function and may cause cell death. SARS-CoV-2-infected T helper cells express higher levels of IL-10, which is associated with viral persistence and disease severity. Thus, CD4-mediated SARS-CoV-2 infection of T helper cells may contribute to a poor immune response in COVID-19 patients.</p

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Geoeconomic variations in epidemiology, ventilation management, and outcomes in invasively ventilated intensive care unit patients without acute respiratory distress syndrome: a pooled analysis of four observational studies

Background: Geoeconomic variations in epidemiology, the practice of ventilation, and outcome in invasively ventilated intensive care unit (ICU) patients without acute respiratory distress syndrome (ARDS) remain unexplored. In this analysis we aim to address these gaps using individual patient data of four large observational studies. Methods: In this pooled analysis we harmonised individual patient data from the ERICC, LUNG SAFE, PRoVENT, and PRoVENT-iMiC prospective observational studies, which were conducted from June, 2011, to December, 2018, in 534 ICUs in 54 countries. We used the 2016 World Bank classification to define two geoeconomic regions: middle-income countries (MICs) and high-income countries (HICs). ARDS was defined according to the Berlin criteria. Descriptive statistics were used to compare patients in MICs versus HICs. The primary outcome was the use of low tidal volume ventilation (LTVV) for the first 3 days of mechanical ventilation. Secondary outcomes were key ventilation parameters (tidal volume size, positive end-expiratory pressure, fraction of inspired oxygen, peak pressure, plateau pressure, driving pressure, and respiratory rate), patient characteristics, the risk for and actual development of acute respiratory distress syndrome after the first day of ventilation, duration of ventilation, ICU length of stay, and ICU mortality. Findings: Of the 7608 patients included in the original studies, this analysis included 3852 patients without ARDS, of whom 2345 were from MICs and 1507 were from HICs. Patients in MICs were younger, shorter and with a slightly lower body-mass index, more often had diabetes and active cancer, but less often chronic obstructive pulmonary disease and heart failure than patients from HICs. Sequential organ failure assessment scores were similar in MICs and HICs. Use of LTVV in MICs and HICs was comparable (42\ub74% vs 44\ub72%; absolute difference \u20131\ub769 [\u20139\ub758 to 6\ub711] p=0\ub767; data available in 3174 [82%] of 3852 patients). The median applied positive end expiratory pressure was lower in MICs than in HICs (5 [IQR 5\u20138] vs 6 [5\u20138] cm H2O; p=0\ub70011). ICU mortality was higher in MICs than in HICs (30\ub75% vs 19\ub79%; p=0\ub70004; adjusted effect 16\ub741% [95% CI 9\ub752\u201323\ub752]; p&lt;0\ub70001) and was inversely associated with gross domestic product (adjusted odds ratio for a US$10 000 increase per capita 0\ub780 [95% CI 0\ub775\u20130\ub786]; p&lt;0\ub70001). Interpretation: Despite similar disease severity and ventilation management, ICU mortality in patients without ARDS is higher in MICs than in HICs, with a strong association with country-level economic status. Funding: No funding

Evaluating the Effects of SARS-CoV-2 Spike Mutation D614G on Transmissibility and Pathogenicity.

Global dispersal and increasing frequency of the SARS-CoV-2 spike protein variant D614G are suggestive of a selective advantage but may also be due to a random founder effect. We investigate the hypothesis for positive selection of spike D614G in the United Kingdom using more than 25,000 whole genome SARS-CoV-2 sequences. Despite the availability of a large dataset, well represented by both spike 614 variants, not all approaches showed a conclusive signal of positive selection. Population genetic analysis indicates that 614G increases in frequency relative to 614D in a manner consistent with a selective advantage. We do not find any indication that patients infected with the spike 614G variant have higher COVID-19 mortality or clinical severity, but 614G is associated with higher viral load and younger age of patients. Significant differences in growth and size of 614G phylogenetic clusters indicate a need for continued study of this variant